[Feature] Auto-detect and crop multiple photos from scanned album pages (Multi-Photo Extract / Split from Scan)

[MrCoala]

Problem or use case

Many people digitize old photo albums by scanning entire pages (or photographing them). This results in a single image containing several individual photos with white/uniform background between them.
Currently SnapOtter has excellent Smart Crop (subject/face/trim) and Split Image tools, but neither can reliably detect and extract multiple (or one) separate rectangular photos from one scanned page into individual files.

Proposed solution

Add a new Image tool (e.g. “Multi-Photo Crop” or “Album Page Splitter”) that:

• Detects one or multiple rectangular photos on a uniform/white background
• Automatically crops each photo into its own image
• Optionally deskews / straightens tilted photos
• Supports batch processing of many scanned pages
• Outputs individual high-quality files (with optional padding or border trim)

Alternatives considered

No response

Area

New tool

Contribution

• I'm willing to submit a PR for this feature